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alekssr [168]
2 years ago
14

Which of the following is a substantial difference between embryonic stem cells and the stem cells found in adult tissues? Quest

ion 4 options: a) In laboratory culture, only adult stem cells are immortal. b) In nature, only embryonic stem cells give rise to all the different types of cells in the organism. c) Only adult stem cells can be made to differentiate in the laboratory. d) Only embryonic stem cells are in every tissue of the adult body.
Biology
1 answer:
WITCHER [35]2 years ago
5 0

Answer:

b) In nature, only embryonic stem cells give rise to all the different types of cells in the organism.

Explanation:

Embryonic stem cells are special type of cells formed in the embryonic stage of the life cycle of a living organism. Embryonic stem cells are capable of differentiating into every other type of cells that exists in an organism. Besides the embryonic stem cells, other types of stem cells exist, one of which is the adult stem cell.

The adult stem cell is a type of stem cell found in the tissues of adult organisms as opposed to those found in the embryo. One substantial difference between the embryonic and adult stem cells is that the embryonic stem cells are the only type of stem cells capable of giving rise to all the different types of cells in an organism i.e. embryonic stem cells are capable of differentiation while adult stem cells are not.

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In a diploid individual, one chromosome carries A and B genes, and the homologous chromosome carries different forms (alleles) o
Helen [10]

Answer:

D

Explanation:

This involves a dihybrid inheritance I.e. two genes are being passed on. During meiosis, specifically, the Prophase stage, homologous chromosomes (similar but non-identical chromosomes received from each parent) line side by side. According to the question, one chromosome contains A and B alleles and its homologue, received by the other parent carries a and b alleles. This means that the diploid individual has a genotype AaBb for that gene.

According to Mendel's law of independent assortment, the alleles separate independently of one another into gametes. I.e. allele A and a separates into the gametes without affecting alleles B and b of the other gene.

Crossing-over, which is the exchange of chromosomal segment occurs between the two homologues. Hence, the exchange of chromosomal segments containing alleles in the individual will possibly produce four gametes with the genotypes: AB, Ab, aB, ab.

4 0
3 years ago
What group of organisms are responsible for capturing energy within ecosystems
Marina86 [1]

The type of organisms that take energy by eating up other organisms in an ecosystem are called 'CONSUMERS'. Now these consumers are further divided into three major classes:

1. Primary consumers: this type of consumers feed directly from the producers (plants) and they only eat grass, leaves, vegetables, etc. Such animals are also called herbivores. Example: rabbit

2. Secondary consumers: these are the animals that eat up primary consumers (animals that feed only on plants). These animals are called carnivores. Example: snake

3. Tertiary consumers: animals that eat carnivores which eats a herbivore are called tertiary consumers. They can be completely carnivore or omnivore (who feed on animals and plants both). Example: humans (they feed on animals and plants both)

4 0
3 years ago
Compare the practices of shelterwood cutting, clearcutting, and seed-tree cutting.​
Kazeer [188]

Answer:

Clearcutting removes all the trees within a certain area at one time. Shelterwood cutting also removes all the trees in an area, but does it in stages over several years. Seed-tree cutting removes all the trees except for a select number of mature trees that can then reseed the area.

Explanation:

Hope that helps!

4 0
3 years ago
Completa las siguientes hebras de ADN
den301095 [7]

Answer:

yes.

Explanation:

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6 0
3 years ago
When lactose is present, the E. Coli will "turn on" the lactase gene.<br> True<br> False
Vaselesa [24]

Answer:

true

Explanation:

lactase is the enzyme that leads to the hydrolisis of lactose, when lactose is present the e coli needs to hydrolyse it to simple sugars so it needs to active the gene for lactase synthesis

4 0
2 years ago
Read 2 more answers
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